membrane filtration Articles
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Comparison of methods for the enumeration of
Clostridium perfringens spores in waterFour methods for enumerating Clostridium perfringens spores in water were evaluated: (1) the IMM (Iron Milk Medium) method (MPN); (2) the LS (Lactose Sulfite Broth) method (MPN); (3) the m-CP (membrane filtration Clostridium perfringens Agar) method (membrane filtration); and (4) the TSC (Tryptose Sulfite Cycloserine Agar) method (membrane filtration). The performance of these methods was ...
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Membrane filtration
Membrane is a thin layer of material that is capable of separating compounds as a function of physical and chemical properties when a driving force is applied across the membrane, which has been widely used in a wide range of applications in water industry [1]. Membrane can be classified by the range of compounds separated and the driving forces employed. For example, microfiltration (MF), ...
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Effects of recycling flocculation membrane filtration on drinking water treatment
Recycling flocculation membrane filtration (RF-MF) and coagulation membrane filtration (C-MF) were investigated for removal of natural organic matter (NOM) from Luan river in this study. The effectiveness of recycling flocculation pretreatment on both NOM removal and membrane filtration were assessed under different concentrations of coagulant and reflux flocs. Under the conditions of coagulant ...
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Development of a model-based control system for membrane filtration process
Reduction of operational cost and certification of safety for treated water are required for the membrane filtration process for drinking water. Therefore a model-based control system is developed to reduce operational cost. A process model is used for the model-based control system that calculates the transmembrane pressure (TMP) in the future. This allows the model-based control system to ...
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VSEP recycles airplane deicing fluid, protects the environment and provides eight month payback
New Logic has developed a unique membrane filtration system for treatment if all types of glycol based fluids. The objective is to recover as much glycol as possible and to remove contaminants and particulates added by usage. The process involves use of New Logic’s proprietary V✧SEP (Vibratory Shear Enhanced Process) vibrating membrane filtration system. Glycols have many uses including ...
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Caustic Recovery Using Membrane Filtration
Abstract Food and beverage processors that use dilute caustic solutions for cleaning process equipment have shown increased interest in recovering the used caustic. The primary reason is that the price of caustic has increased significantly in the past year or so. Membrane filtration technology can be used to remove suspended solids (clarify with microfiltration) and/or dissolved solids (purify ...
By GEA
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Application of quantitative real-time PCR compared to filtration methods for the enumeration of Escherichia coli in surface waters within Vietnam
Surface water samples in Vietnam were collected from the Saigon River, rural and suburban canals, and urban runoff canals in Ho Chi Minh City, Vietnam, and were processed to enumerate Escherichia coli. Quantification was done through membrane filtration and quantitative real-time polymerase chain reaction (PCR). Mean log colony-forming unit (CFU)/100 ml E. coli counts in the dry season for ...
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Flocs' re-growth characteristics in circulation coagulation–membrane filtration process
Membrane fouling can be significantly mitigated through circulating coagulation, floc breakage and re-growth under appropriate conditions. In this study, unified membrane filtration index (UMFI) was adopted to analyze the membrane fouling. The effect of circulating coagulation pretreatment on both flocs' average diameter and membrane fouling were investigated under different ...
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VSEP replaces centrifuges, cuts energy costs and reduces evaporator load
New Logic Research’s patented V✧SEP membrane filtration system has been installed at Silica Gel processing plants. Vibrational membrane filtration is an innovative new way to dewater or diafilter Silica product. V✧SEP can be used as a pre-treatment for a spray dryer or evaporator. It can replace other less reliable pre-treatment systems such as Centrifuges. Today’s Industrial Silica ...
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The hybrid process TiO2/PAC: performance of membrane filtration
In investigations concerning the photocatalytic degradation by TiO2 usually filter discs with a pore size of 0.22 μm and 0.45 μm are used for the removal of photocatalyst particles in aqueous suspensions. In this study the effective rejection of suspended particles by microfiltration in different types of membrane modules and with different membrane materials was investigated. Furthermore, ...
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Forward osmosis for the treatment of reverse osmosis concentrate from water reclamation: process performance and fouling control
While high quality water reuse based on dual membrane filtration (membrane filtration or ultrafiltration, followed by reverse osmosis) is expected to be progressively applied, treatment and sustainable management of the produced reverse osmosis concentrate (ROC) are still important issues. Forward osmosis (FO) is a promising technology for maximising water recovery and further dewatering ROC so ...
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Project - Concentration of liquids and recovery of clean water and/or raw materials
Project Description The project is focused on developing the commercial use of forward osmosis to concentrate highly fouling streams. Forward osmosis differs from traditional membrane filtration technology in its resistance to fouling and it doesn’t use any mechanical pressure or heat for the separation. This opens concentration possibilities where classical technologies fail, such as ...
By BLUE-tec BV
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Application of membrane processes in fractionation of elements in river water
The influence of wastewater treatment plant (WWTP) effluents from one microelectronic industrial zone on element concentrations and partitioning in river water was investigated. The stepwise membrane filtration is used to distinguish different size fractions including large particulate (>18 μm), particulate (0.2–18 μm), colloidal/nanoparticle (10 kDa–0.2 μm) and truly dissolved fractions ...
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Experimental evaluations of water treatment systems using a pilot-scale plant for adaptations to a sharp increase in raw-water turbidity caused by climate change
One effect of climate change on the water supply systems in Japan may be a sharp increase in the raw-water turbidity following heavy rain. The objective of this study was to evaluate water treatment performance with a sharp increase in raw-water turbidity. This evaluation was carried out from the perspective of turbidity response by a pilot-scale plant using sand filtration and membrane ...
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Hg removal and the effects of coexisting metals in forward osmosis and membrane distillation
In this study, we investigate the rejection of Hg, Cd, and Pb and the effect of coexisting metals on Hg removal through forward osmosis (FO) and membrane distillation (MD) in order to establish a more effective water treatment process. The results of our laboratory experiment indicate that more than 97% of the rejection for each metal is achieved through the FO system, and this rejection is ...
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VSEP treats metal plating wastewater with no chemical addition and a filtrate well below MP&M discharge limits
A discussion of the suitability of New Logic’s patented V✧SEP Vibratory Membrane Filtration System in the treatment of wastewater from metal plating operations. Timely discussion covers the upcoming MP&M (Metal Plating and Manufacturing) regulations being formulated by the EPA as a result of the Clean Water ...
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VSEP treats well and surface water to provide ultra clean drinking water
New Logic Research manufactures a proprietary vibrating membrane filtration system that is uniquely suited for treatment of commercial and domestic drinking water. The use of a vibrating membrane mechanism to avoid membrane fouling is new and is just the kind of improvement needed to make the use of membrane filtration an effective and economical treatment solution for drinking water. New Logic ...
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Performance of a novel recycling magnetic flocculation membrane filtration process for tetracycline-polluted surface water treatment
A recycling magnetic flocculation membrane filtration (RMFMF) process integrating circulating coagulation, magnetic enhanced flocculation and membrane filtration was investigated for the treatment of surface water micro-polluted by tetracycline, a typical pharmaceutical and personal care product. A bench-scale experiment was conducted and several water quality parameters including turbidity, ...
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Fabrication of catalytic ceramic membranes for water filtration
The paper describes the use of the layer-by-layer technique to coat ceramic membranes with iron and manganese oxide nanoparticles. The coatings are thin (Escherichia coli bacteria.Keywords: ceramic membranes, fouling, membrane filtration, ozone, ...
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A history of chemically resistant membranes
The use of polymeric membranes for filtration of non-aqueous solutions started around 1960 and has been developed significantly since then [1]. Today, non-aqueous membrane filtration applications in chemical and pharmaceutical processing account for more than 25% of the global total polymeric membrane market [2]. To put into perspective the potential significance of membrane filtration for ...
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